How severe is CVE-2026-8202?

CVE-2026-8202 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-8202 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8202?

CVE-2026-8202 affects Mongodb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8202?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8202 have an EU (EUVD) identifier?

Yes. CVE-2026-8202 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29894.

When was CVE-2026-8202 published?

CVE-2026-8202 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-8202

CVE-2026-8202 is a medium-severity vulnerability in Mongodb with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 5.3
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29894
Weakness: CWE-770
Affected product: Mongodb
Published: 2026-05-13
Last modified: 2026-06-17

Description

Using a densely populated chars mask and a large input string in the MongoDB aggregation operators $trim, $ltrim, and $rtrim, an authenticated user with aggregation permissions can pin CPU utilization at 100% for an extended period of time. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

Frequently asked questions

What is CVE-2026-8202?: Using a densely populated chars mask and a large input string in the MongoDB aggregation operators $trim, $ltrim, and $rtrim, an authenticated user with aggregation permissions can pin CPU utilization at 100% for an extended period of time. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.
How severe is CVE-2026-8202?: CVE-2026-8202 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-8202 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8202?: CVE-2026-8202 affects Mongodb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8202?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8202 have an EU (EUVD) identifier?: Yes. CVE-2026-8202 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29894.
When was CVE-2026-8202 published?: CVE-2026-8202 was published on 2026-05-13 and last updated on 2026-06-17.

References

https://jira.mongodb.org/browse/SERVER-120668

Affected products (1)

cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

161.97.123.14 (ipv4-addr)